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Disclosery

Rock Springs Capital Management LP: KYMR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Rock Springs Capital Management LP on KYMR, newest first. How the timeline and the estimate are built.

Rock Springs Capital Management LP held 453,156 KYMR shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 453,156 shares
    Change vs previous 13F -43,715 shares

    2.54% of the 13F portfolio, value $51,963,399.

    13F-HR 0001172661-26-003527 filed by Rock Springs Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 496,871 shares
    Change vs previous 13F 0 shares

    2.44% of the 13F portfolio, value $41,384,386.

    13F-HR 0001172661-26-002225 filed by Rock Springs Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 496,871 shares
    Change vs previous 13F +46,497 shares

    1.98% of the 13F portfolio, value $38,661,533.

    13F-HR 0001172661-26-000917 filed by Rock Springs Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 450,374 shares
    Change vs previous 13F 0 shares

    1.49% of the 13F portfolio, value $25,491,168.

    13F-HR 0001172661-25-004882 filed by Rock Springs Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 450,374 shares
    Change vs previous 13F -344,063 shares

    1.22% of the 13F portfolio, value $19,654,321.

    13F-HR 0001172661-25-003273 filed by Rock Springs Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-03-31
    13F 794,437 shares
    Change vs previous 13F -239,700 shares

    1.24% of the 13F portfolio, value $21,743,741.

    13F-HR 0001172661-25-001953 filed by Rock Springs Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-12-31
    13F 1,034,137 shares
    Change vs previous 13F -15,249 shares

    1.58% of the 13F portfolio, value $41,603,332.

    13F-HR 0001172661-25-000867 filed by Rock Springs Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-09-30
    13F 1,049,386 shares
    Change vs previous 13F not available

    1.62% of the 13F portfolio, value $49,667,439.

    13F-HR 0001172661-24-004721 filed by Rock Springs Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).